:root{--bg:#f6f7fb;--panel:#fff;--panel-2:#fbfcff;--border:#e5e8f1;--text:#1b2147;--muted:#6b7390;--brand:#fa4100;--brand-2:#ff7a33;--navy:#171d5d;--good:#0f9d6b;--danger:#d92d20}*{box-sizing:border-box}body,html{padding:0;margin:0}body{background:radial-gradient(1100px 520px at 85% -10%,#fff3ee 0,transparent 55%),var(--bg);color:var(--text);font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased}a{color:var(--brand)}.wrap{max-width:980px;margin:0 auto;padding:32px 20px 80px}.header{justify-content:space-between;margin-bottom:28px}.brand,.header{display:flex;align-items:center}.brand{gap:12px;font-weight:700;font-size:18px}.brandmark{height:26px;width:auto;display:block}.logo{width:34px;height:34px;border-radius:9px;background:linear-gradient(135deg,var(--navy),var(--brand));display:grid;place-items:center;font-weight:800;color:#fff}.tag{font-size:12px;color:var(--muted);border:1px solid var(--border);padding:3px 8px;border-radius:999px}.card{background:var(--panel);border:1px solid var(--border);border-radius:16px;padding:22px;margin-bottom:20px;box-shadow:0 6px 22px rgba(23,29,93,.06)}.card h2{margin:0 0 6px;font-size:16px;color:var(--navy)}.card p.sub{margin:0 0 16px}.card p.sub,label{color:var(--muted);font-size:13px}label{display:block;margin:12px 0 6px}input[type=email],input[type=password],input[type=text],textarea{width:100%;background:#fff;border:1px solid var(--border);color:var(--text);border-radius:10px;padding:11px 12px;font-size:14px;font-family:inherit}textarea{resize:vertical;min-height:110px}input:focus,textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(250,65,0,.12)}.btn{border:none;cursor:pointer;border-radius:10px;padding:11px 16px;font-size:14px;font-weight:600;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff}.btn:hover{filter:brightness(1.05)}.btn:disabled{opacity:.5;cursor:default}.btn.ghost{background:#fff;border:1px solid var(--border);color:var(--text)}.btn.ghost:hover{border-color:var(--brand)}.btn.sm{padding:7px 12px;font-size:13px}.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}.code{background:#f4f5fb;border:1px solid var(--border);border-radius:10px;padding:14px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;color:#2a2f4a;white-space:pre-wrap;word-break:break-all}.code,.note{font-size:12.5px}.note,.pill{color:var(--muted)}.pill{font-size:11px;padding:2px 8px;border-radius:999px;border:1px solid var(--border)}table{width:100%;border-collapse:collapse;font-size:13.5px}td,th{text-align:left;padding:10px 8px;border-bottom:1px solid var(--border)}th{font-weight:600}.muted,th{color:var(--muted)}.toast{font-size:13px;margin-top:10px}.ok{color:var(--good)}.err{color:var(--danger)}.login-shell{min-height:100vh;display:grid;place-items:center;padding:20px}.login-card{width:100%;max-width:380px}.docp{font-size:13.5px;line-height:1.6;color:var(--text);margin:0 0 12px}.docp.muted{color:var(--muted)}.steps{margin:0 0 14px;padding-left:20px;font-size:13.5px;line-height:1.7}.steps li{margin-bottom:6px}.kbd{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12.5px;background:#fff1ea;border:1px solid #ffd4c2;border-radius:6px;padding:1px 6px;color:#c0360a}.tabs{display:flex;flex-wrap:wrap;gap:6px;margin:6px 0 12px}.tab{border:1px solid var(--border);background:#fff;color:var(--muted);border-radius:8px;padding:6px 12px;font-size:13px;cursor:pointer;font-weight:600}.tab:hover{color:var(--text)}.tab.active{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;border-color:transparent}.codeblock{position:relative}.codeblock pre{background:#f6f7fc;border:1px solid var(--border);border-radius:10px;padding:16px 14px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12.5px;line-height:1.55;color:#313862;overflow-x:auto;margin:0;white-space:pre}.codeblock .copybtn{position:absolute;top:10px;right:10px;border:1px solid var(--border);background:#fff;color:var(--muted);border-radius:7px;padding:5px 10px;font-size:12px;cursor:pointer}.codeblock .copybtn:hover{color:var(--text);border-color:var(--brand)}.callout{border:1px solid var(--border);border-left:3px solid var(--brand);background:#fbfcff;border-radius:10px;padding:12px 14px;font-size:13px;line-height:1.55;color:var(--text);margin:0 0 14px}.callout b{color:#c0360a}.langtoggle{display:flex;gap:6px}.chat{position:relative;display:flex;flex-direction:column;height:100vh;background:#fff}.chat-head{padding:14px 16px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:10px}.chat-body{flex:1 1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:12px}.msg{max-width:82%;padding:10px 13px;border-radius:14px;font-size:14px;line-height:1.45;white-space:pre-wrap}.msg.user{align-self:flex-end;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;border-bottom-right-radius:4px}.msg.bot{align-self:flex-start;background:#f1f3f9;border:1px solid var(--border);color:var(--text);border-bottom-left-radius:4px}.chat-foot{padding:12px;border-top:1px solid var(--border);display:flex;flex-direction:column;gap:8px}.foot-input{display:flex;gap:8px;align-items:flex-end}.chat-foot textarea{min-height:44px;max-height:120px;flex:1 1}.typing{font-size:12px;color:var(--muted);padding:2px 4px}.saved-chip{font-size:11px;color:var(--good);margin-top:4px}.empty{font-size:14px;text-align:center;margin:auto;max-width:280px}.empty,.icon-btn{color:var(--muted)}.icon-btn{flex:0 0 auto;width:44px;height:44px;border-radius:10px;cursor:pointer;border:1px solid var(--border);background:#fff;font-size:18px;display:grid;place-items:center;transition:border-color .12s ease,color .12s ease}.icon-btn:hover{border-color:var(--brand);color:var(--brand)}.icon-btn:disabled{opacity:.5;cursor:default}.att-list{display:flex;flex-direction:column;gap:6px}.att{position:relative;overflow:hidden;display:flex;align-items:center;gap:8px;background:#f4f5fb;border:1px solid var(--border);border-radius:10px;padding:7px 8px 7px 10px;font-size:12px;color:var(--text)}.att.error{background:#fff1f0;border-color:#ffd4cf}.att.ready{background:#f0faf5;border-color:#cdeede}.att-ic{font-size:13px;flex:0 0 auto}.att-name{font-weight:600;max-width:150px}.att-meta,.att-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.att-meta{color:var(--muted);font-size:11px}.att-meta.err{color:var(--danger)}.att-x{margin-left:auto;border:none;background:transparent;cursor:pointer;color:var(--muted);font-size:12px;line-height:1;padding:2px 4px;border-radius:6px;flex:0 0 auto}.att-x:hover{color:var(--danger);background:rgba(217,45,32,.08)}.att-bar{position:absolute;left:0;bottom:0;height:3px;width:100%;background:rgba(23,29,93,.08)}.att-bar i{display:block;height:100%;background:linear-gradient(90deg,var(--brand),var(--brand-2));transition:width .2s ease}.att-err{font-size:12px;color:var(--danger)}.msg-files{display:flex;flex-wrap:wrap;gap:6px;margin-top:4px}.msg-file{font-size:11px;color:var(--muted);background:#f4f5fb;border:1px solid var(--border);border-radius:999px;padding:2px 8px}.drop-overlay{position:absolute;inset:0;z-index:20;background:rgba(255,247,243,.94);-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);display:grid;place-items:center;padding:20px}.drop-inner{width:100%;max-width:300px;text-align:center;border:2px dashed var(--brand);border-radius:18px;padding:28px 20px;background:#fff;box-shadow:0 14px 40px rgba(250,65,0,.12);pointer-events:none}.drop-plus{width:64px;height:64px;margin:0 auto 14px;border-radius:50%;display:grid;place-items:center;font-size:40px;font-weight:300;line-height:1;color:#fff;background:linear-gradient(135deg,var(--brand),var(--brand-2))}.drop-title{font-size:18px;font-weight:700;color:var(--navy)}.drop-sub{font-size:12.5px;color:var(--muted);margin-top:4px}